Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 64 for “"internal model"”.
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Internal Model Principle: extension to the switching case and applications
… based on the extension of the well-known Internal Model Principle to the case of periodic switched linear exosystems. This extension, inspired by power electronics applications, aims to provide an effective design method to robustly achieve the asymptotic tracking of periodic references …
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Does cerebellar cortex function as a forward internal model for motor control?
… command. This control element, termed a forward internal model, receives an efferent copy of the motor command and information about the current state in order to predict the future state (i.e. kinematic variables like position, velocity) of the limb. Previous psychophysical, imaging, and patient …
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Internalizing the System Dynamics for a Second Order System (Internal Model, Tracking)
… experiments which tested characteristics of the internal model developed for the system dynamics. The internal model differed depending on the kind of training received. Two of the groups, the control and the point predictor groups, internalized the second order system incorrectly as a first …
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Adaptive internal model principle-based control for tremor suppression and sinusoidal signal tracking
… control. This dissertation presents an adaptive Internal Model Principle-based controller with a primary focus on tremor suppression and sinusoidal signal tracking. The proposed designs include fixed-parameter and adaptive control strategies based on proportional, Two-Degree-of-Freedom, and …
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Design and simulation of a state-variable control system for the positioning of a milling table using the internal model principle
… disturbance rejection, and must be robust. The internal model principle is a general method developed by Davison, Desoer and Wonham which achieves asymptotic tracking and disturbance rejection, and is robust. In this thesis, a state-variable control system for the positioning of a milling table …
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Applying a comprehensive-internal model for the evaluation of social-scientific research to the identity crisis stage of Erik Erikson's developmental theory
… a biblical framework alternative to the typical models of the relationships between theology and social-scientific research is necessary for discerning the appropriateness of using Erik Erikson's developmental theory, in whole or in part, in the context of Christian discipleship. Chapter 1 …
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Automatic Control Strategies of Mean Arterial Pressure and Cardiac Output. MIMO controllers, PID, internal model control, adaptive model reference, and neural nets are developed to regulate mean arterial pressure and cardiac output using the drugs sodium Nitroprusside and dopamine
… researchers have conducted studies earlier on modelling and/or control of abnormal blood pressure for postoperative patients. However, there are still many concerns about smooth transition of blood pressure without any side effect. The blood pressure is classified in two categories: high blood …
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Reconfigurable autopilot design for a high performance aircraft using model predictive control
… will describe a design approach incorporating Model Predictive Control (MPC) with a self updating model to achieve a level of reconfiguration in a generic high performance aircraft. MPC has the advantage of explicitly taking a model of the failed system and incorporating it into a receding …
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A Componential Approach to the Investigation of Individual Differences in Time-Sharing (dual-Task Performance, Information Processing)
… performance was examined using a componential model. Five proposed components were assessed: (1) serial processing ability, (2) an internal model of the system dynamics, (3) maintenance of different operations in working memory, (4) adaptation to rapidly changing dynamic conditions, and (5) …
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A multisensory observer model for human spatial orientation perception
Quantitative "observer" models for spatial orientation and eye movements have been developed based on 1-G data from humans and animals (e.g. Oman 1982, 1991, Merfeld, et al 1993, 2002; Haslwanter 2000, Vingerhoets 2006). These models assume that the CNS estimates "down", head angular velocity and …
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The Science of Mind Reading: New Inverse Optimal Control Framework
… hidden firefly location. We cannot observe this internal belief state, nor the internal model assumed by the animal, but only the actions chosen and the sensory observations the animal received. To explain the actions we need to reconstruct the internal model which results in the actions. Using …
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Self-Modeling Neural Systems
… use the framework of optimal control theory to model goal-directed behavior and repurpose it in new ways. We demonstrate a method for creating a hierarchical control network in which higher levels of the control hierarchy deal with tasks of increased abstractness. In a two-level system, the …
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Applied Control Strategies at a Cogeneration Plant
… The First Order Plus Dead Time (FOPDT) process model</p> <p>3) The Internal Model Control (IMC) correlations for PI controller tuning</p> <p>4) Static feed forward with feedback trim</p> <p>5) Cascade Control</p>
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A feasibility study for an IMC application in the mining industry
This project is a feasibility study using Internal Model Control strategies to optimise the performance of a secondary and tertiary crusher stage at a mine. First, a mathematical model of the plant is_ extracted and simulated. The viability of using IMC on an unstable process is considered. Various …
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Generalized Polynomial H(infinity) Predictive Control Utilizing Minimax Prediction
… reference tracking via an application of the internal model principle, minimax disturbance rejection using the embedding techniques of Kwakernaak, guaranteed stability resulting from a form of internal model control, and a simplified structure resulting from a derivation inspired by the …
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Models of generalization in motor control
… system (CNS) to perform computation and build an internal model for a task. This thesis investigates the CNS's ability to generalize a learned motor skill throughout neighboring spatial locations, its ability to divide the spatial generalization with variation of context, and proposes models of …
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Dynamic Primitives in Human Manipulation of Complex Objects
… a cup of coffee while inducing minimum internal oscillations, this study investigated the nature of human interactions with a complex object. An open-loop control strategy consisting of composition of submovement and impedance dynamic primitives was proposed and simulated. The effect of …
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Whistleblowing: Understanding the Reporting of Workplace Deviance
… utilizing survey research and/or simplistic models with one or two narrowly defined antecedents and demographic proxy variables. Results of these studies have resulted in inconsistent and even conflicting findings. The current study aimed to examine the causal antecedents of deviant act …
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Computational studies of cerebellar cortical circuitry
… the prediction sensory error used to update an internal model. These results provide new insights into the cerebellum function and have interesting implications for the forward internal model hypothesis. The tottering mouse is an autosomal recessive disorder involving a mutation in the gene …
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AUTOMATIC TUNING OF PROCESS CONTROLLERS : PRACTICAL APPROACHES
… relay auto-tuning procedure is presented to model the over-damped processes approximately by a reduced order process model in terms of a first or second order transfer function plus dead time. With the auto-tuning method, the formulas give reasonably accurate gain margin and phase margin with …
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